Proton Calorimetry/Experimental Runs/2021/Apr22

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*Both CMOS sensor daughter board and DDC232 Nexys Video board in detector enclosure.
*Both CMOS sensor daughter board and DDC232 Nexys Video board in detector enclosure.
*In all runs, an integration time of 170us is used.
*In all runs, an integration time of 170us is used.
-
*Video steps through individual consecutive acquisitions at frame rate shown.
+
*Video steps through individual consecutive acquisitions at frame rate shown. Each frame represents 170us in time.
*Histogram of one photodiode also provided. Expect to see clean gaussian shape if no external noise is being picked up.
*Histogram of one photodiode also provided. Expect to see clean gaussian shape if no external noise is being picked up.
**Signal photodiode shown for Run 14.
**Signal photodiode shown for Run 14.

Latest revision as of 09:54, 29 April 2021

Noise tests of UCLH beam test setup in D109/D27.

Aim: Investigate source of external electronic noise observed at UCLH by measuring dark noise in lab/office with CMOS sensor turned off/on.

Notes

  • D27 is an electronically noisy lab whereas D109 is a quieter office (though still not a perfectly shielded environment).
  • Test 2 DDC232 boards coupled to scintillator stack.
  • CMOS sensor coupled to scintillator stack on perpendicular face.
  • Both CMOS sensor daughter board and DDC232 Nexys Video board in detector enclosure.
  • In all runs, an integration time of 170us is used.
  • Video steps through individual consecutive acquisitions at frame rate shown. Each frame represents 170us in time.
  • Histogram of one photodiode also provided. Expect to see clean gaussian shape if no external noise is being picked up.
    • Signal photodiode shown for Run 14.
  • Note the absolute value of the y-scale, which differs in some clips.

Videos and thumbnails saved in /unix/www/html/pbt/wikiData/movies/DDC232/210422

Run Description Histogram Video
1 D27, CMOS on, 350pC

Run001.png

Run001.png

2 D27, CMOS on, 12.5pC

Run002.png

Run002.png

3 D27, CMOS off, 350pC

Run003.png

Run003.png
4 D27, CMOS off, 12.5pC

Run004.png

Run004.png
5 D109, CMOS on, 350pC

Run005.png

Run005.png
6 D109, CMOS on, 12.5pC

Run006.png

Run006.png
7 D109, CMOS off, 350pC

Run007.png

Run007.png
8 D109, CMOS off, 12.5pC

Run008.png

Run008.png
9 D109, CMOS on, 12.5pC. Detector housing grounded using ground pin of FPGA. Grounded using optical breadboard inside detector.

Run009.png

Run009.png
10 D109, CMOS on, 12.5pC. Previous grounding seemed ineffective. Now grounded by attaching clip to metal on outside face of detector enclosure.

Run010.png

Run010.png
11 D109, CMOS off, 12.5pC, grounded.

Run011.png

Run011.png
12 D27, CMOS off, 12.5pC, grounded.

Run012.png

Run012.png
13 D27, CMOS off, 12.5pC

Run013.png

Run013.png
14 D27, CMOS off, 12.5pC, grounded, LED. LED pulse of 1MHz, 6V height and 500ns width. Injected into single scintillator sheet coupled to photodiode 16.

Run014.png

Run014.png
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